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Q: How many perfect squares are there between 20 - 30?

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1 and 400.

4

16 => 256 17 => 289 18 => 324 19 => 361 20 => 400

Fifteen of them. All but numbers of the form 4n-2 = 2, 6, 10, 14, 18

28 is a perfect number.

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There are 8 perfect squares TTThe

Three numbers.

30

The perfect squares that are less than 20 are 0, 1, 4, 9, and 16.

The first 6 perfect squares are 1,4,9,16,25, and 36, When you are doing perfect squares, you multiply by itself. Thank you Mrs.Pelfrey By: Camila

Only one - 16

20 squares x 20 squares = 400 squares

1 and 400.

The only perfect number between 20 and 50 is 28.

three ==================== There are an infinite number of them. Here are a few: (2.01)2 = 4.0401 (2.02)2 = 4.0804 (2.021)2 = 4.044121 (2.02101)2 = 4.08448142

4

400 and 900 are squares of 20 and 30, respectively.